I printed in PLA, since warping of ABS could affect accuracy. Nylon would be perfect i guess, if you can print it. The "coupling flex" is printed in soft PLA. - 2.5mm drill bit - M3 thread cutter - 9mm thick board - hinges (low play) - Powerbank used: eStuff 2200 - Bearings: 12 x 8 x 3.5mm - Stepper Driver: Easydriver - Endswitch - Thread insert: Adapter 3/8" to 1/4" - M5 threaded bar, M5 long nut (20mm)